\[Страница\ 29.\]
\[13.\ Действие\ деления\]
\[\boxed{\mathbf{1}.}\]
\[\textbf{а)}\ 60\ :4 = 15\]
\[15 \cdot 4 = 60 - верно;\]
\[60\ :15 = 4 - верно.\]
\[\textbf{б)}\ 55\ :5 = 11\]
\[11 \cdot 5 = 55 - верно;\]
\[55\ :11 = 5 - верно.\]
\[\boxed{\mathbf{2}.}\]
\[429 \cdot 3572 = 1\ 532\ 388\]
\[\textbf{а)}\ 1\ 532\ 388\ :429 = 3572\]
\[\textbf{б)}\ 1\ 532\ 388\ :3572 = 429\]
\[\boxed{\mathbf{3}.}\]
\[\textbf{а)}\]
\[a\] | \[7\] | \[12\] | \[7\] | \[15\] | \[8\] | \[15\] |
---|---|---|---|---|---|---|
\[b\] | \[8\] | \[6\] | \[6\] | \[4\] | \[9\] | \[3\] |
\[a \cdot b\] | \[56\] | \[72\] | \[42\] | \[60\] | \[72\] | \[45\] |
\[\textbf{б)}\ \]
\[x\] | \[56\] | \[72\] | \[48\] | \[56\] | \[66\] | \[95\] |
---|---|---|---|---|---|---|
\[y\] | \[7\] | \[3\] | \[16\] | \[14\] | \[6\] | \[5\] |
\[x\ :y\] | \[8\] | \[24\] | \[3\] | \[4\] | \[11\] | \[19\] |
\[\boxed{\mathbf{4}.}\]